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//! Verify that mutually recursive functions use CPS to avoid overflowing the stack.
//@ run-pass
fn checktrue(rs: bool) -> bool {
assert!(rs);
return true;
}
pub fn main() {
let k = checktrue;
evenk(42, k);
oddk(45, k);
}
fn evenk(n: isize, k: fn(bool) -> bool) -> bool {
println!("evenk");
println!("{}", n);
if n == 0 {
return k(true);
} else {
return oddk(n - 1, k);
}
}
fn oddk(n: isize, k: fn(bool) -> bool) -> bool {
println!("oddk");
println!("{}", n);
if n == 0 {
return k(false);
} else {
return evenk(n - 1, k);
}
}
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